/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/SimCallbackObject.h
Free the output data. Note that allocation is done on the internal thread, but freeing is done on the external thread. A common pattern is to use a single producer single consumer thread safe queue to manage this.
void FreeOutputData_External ( [FSimCallbackOutput](API\Runtime\Chaos\Chaos\FSimCallbackOutput) * Output )